How does Blue by Dulux compare with RAL Classic’s closest paints? The nearest match is RAL Classic Sky blue (ΔE 3.5, “very close”).
Dulux Blue vs RAL Classic
1 closest RAL Classic match ranked by ΔE
ΔE (CIEDE2000) is a perceptual distance metric — lower means a closer match. Matches under ΔE 2 are typically indistinguishable; ΔE 2–4 looks “the same” once dry on a wall; ΔE 4–6 is noticeable side-by-side. Always view a sample pot before committing — screen colours and lighting vary.
| Colour | Number | ΔE | Match quality | Price/L | Price/m2 |
|---|---|---|---|---|---|
| Sky blue | No.5015 | 3.5 | very close | — | — |